CN102433514A - 一种低合金钢及其制备方法 - Google Patents

一种低合金钢及其制备方法 Download PDF

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CN102433514A
CN102433514A CN2011103917305A CN201110391730A CN102433514A CN 102433514 A CN102433514 A CN 102433514A CN 2011103917305 A CN2011103917305 A CN 2011103917305A CN 201110391730 A CN201110391730 A CN 201110391730A CN 102433514 A CN102433514 A CN 102433514A
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俞其平
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NINGBO JINGLEI AUTO PARTS CO Ltd
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Abstract

本发明涉及一种低合金钢及其制备方法,该合金钢的重量百分比是:0.32-0.34%的碳,0.24-0.25%的硅,0.63-0.65%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.007%的钼,0.027-0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.002-0.003%的铌,余量为铁。通过中频感应炉熔炼制备合金钢;将合金钢进行正火和等温淬火处理。通过正火过程获取大量的珠光基体,并通过等温淬火,使合金钢的奥氏体转变成下贝氏体组织,使得合金硬度、耐磨性能及表面耐热性能均得到很大的提高。

Description

一种低合金钢及其制备方法
技术领域
本发明涉及金属材料,尤其是涉及一种低合金钢及其制备方法。
背景技术
汽车的金属配套零件,不仅在结构强度与功能上有较高的要求,同时在机械加工上同样重要,这样的要求不仅是满足汽车使用上的基本条件,同时也是安全可靠延长使用寿命的保障。
现有技术中,生产汽车配件的钢材为普通的中低含量合金钢,因这些汽车金属配件在使用功能上一般是频繁的运动部件,磨损率很高,更换频繁,增加了维护成本。
寻找到一种提高硬度和耐磨性能,同时零件表面耐热性能高的中低含量的合金钢就显的非常重要。发明人依靠在本领域的多年实践和理论经验,提出一种全新的低合金钢配方,该配方能很好的解决了现有生产汽车配件钢材的缺点。
发明内容
本发明的目的是提供一种能够克服现有生产汽车配件钢材中硬度、耐磨性能及表面耐热性能不足的低合金钢。
本发明目的是通过以下技术方案实现的:
一种低合金钢,该合金钢的重量百分比是:0.32-0.34%的碳,0.24-0.25%的硅,0.63-0.65%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.01%的钼,0.027-0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.002-0.003%的铌,余量为铁。
所述刹车用合金钢的制备方法,包括以下步骤:
1)按照重量百分比为0.32-0.34%的碳,0.24-0.25%的硅,0.63-0.65%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.01%的钼,0.027-0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.002-0.003%的铌,余量为铁进行配料;
2)通过中频感应炉熔炼制备合金钢;
3)将合金钢进行正火和等温淬火处理。
上述合金钢制备方法,其中合金钢通过正火和等温淬火处理,采用280±20℃盐浴等温淬火处理。这样一方面获得较高的珠光体基体,细化组织,提高材料的硬度和耐磨性能;另一方面,通过长期保持在下贝氏体转变区的等温淬火,使合金实现奥氏体的等温转变,获得下贝氏体组织。
本发明的有益效果是:
通过正火过程获取大量的珠光基体,并通过选择280±20℃的盐浴等温淬火,使合金钢的奥氏体转变成下贝氏体组织,使得合金硬度、耐磨性能及表面耐热性能均得到很大的提高。
具体实施方式
以下通过具体实施例来解释本发明,应当理解的是,本发明的具体实施例仅能用来解释本发明而不能用来解释为对本发明的限制。
实施例一
一种低合金钢,该合金钢的重量百分比是:0.33%的碳,0.25%的硅,0.64%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.01%的钼,0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.003%的铌,余量为铁。
所述刹车钳用合金钢的制备方法,包括以下步骤:
1)按照重量百分比:0.33%的碳,0.25%的硅,0.64%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.01%的钼,0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.003%的铌,余量为铁进行配料;
2)通过中频感应炉熔炼制备合金钢;
3)将合金钢进行正火和盐浴等温淬火处理。
上述合金钢制备方法,其中合金钢通过正火和盐浴等温淬火处理,采用280±20℃盐浴等温淬火处理。这样一方面获得较高的珠光体基体,细化组织,提高材料的硬度和耐磨性能;另一方面,通过长期保持在下贝氏体转变区的等温淬火,使合金实现奥氏体的等温转变,获得下贝氏体组织。
对得到的铸态合金钢试样做金相组织观察,发现其组织为珠光体组织和下贝氏组织。
对得到的合金进行硬度检测,硬度检测值HRC55。
在本发明的以下实施例中,对得到的铸态合金钢试样做金相组织观察,均发现其组织为珠光体组织和下贝氏组织。
对得到的合金进行硬度检测,硬度检测值HRC54-57。
在本发明的以下实施例中,合金钢的制备方法均相同,所不同的仅是低合金钢的各元素的组成,因此在以下的实施例中,仅描述合金钢的各元素的的重量百分比。
该实施例为本发明的最佳实施例;当用于制造汽车的刹车装置的部件时可以选择本发明的实施例二。
实施例二
一种低合金钢,该合金钢的重量百分比是:0.32%的碳,0.24%的硅,0.65%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.01%的钼,0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.002%的铌,余量为铁。
对得到的合金进行硬度检测,硬度检测值HRC57。
当用于制造汽车的刹车装置部件时,优选该实施例。
实施例三
刹车钳用合金钢,该合金钢的重量百分比是:0.34%的碳,0.25%的硅,0.63%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.01%的钼,0.027%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.003%的铌,余量为铁。
依实施例一的制造过程制造,对得到的合金进行硬度检测,硬度检测值HRC54。
对得到的铸态合金钢试样做金相组织观察,发现其组织大部分为珠光体组织和下贝氏组织。
实施例四
一种低合金钢,该合金钢的重量百分比是:0.33%的碳,0.24%的硅,0.65%的锰,0.001%的磷,0.008%的硫,0.20%的铬,0.04%的镍,0.01%的钼,0.027%的钴,0.0001%的矾,0.01%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.002%的铌,余量为铁。
对得到的合金进行硬度检测,硬度检测值HRC54。
实施例五
刹车钳用合金钢,该合金钢的重量百分比是:0.32%的碳,0.25%的硅,0.63%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.04%的镍,0.01%的钼,0.027%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.003%的铌,余量为铁。
对得到的合金进行硬度检测,硬度检测值HRC55。
本发明不局限于上述特定实施例,在不背离本发明的情况下,本领域技术人员可根据本发明作出各种相应改变,但这些相应改变都应属于本发明所要求保护范围之内。

Claims (4)

1.一种低合金钢,其特征在于,该合金钢的重量百分比是:0.32-0.34%的碳,0.24-0.25%的硅,0.63-0.65%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.007%的钼,0.027-0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.002-0.003%的铌,余量为铁。
2.根据权利要求1所述的刹车钳用合金钢,其特征在于,该合金钢的重量百分比是:0.33%的碳,0.25%的硅,0.64%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.007%的钼,0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.003%的铌,余量为铁。
3.一种刹车钳用合金钢的制备方法,包括以下步骤:
1)按照重量百分比:0.32-0.34%的碳,0.24-0.25%的硅,0.63-0.65%的锰,0.001%的磷,0.008%的硫,0.19%的铬,0.047%的镍,0.007%的钼,0.027-0.028%的钴,0.0001%的矾,0.02%的铝,0.13%的钨,0.0001%的钛,0.002%的硼,0.002-0.003%的铌,余量为铁进行配料;
2)通过中频感应炉熔炼制备合金钢;
3)将合金钢进行正火和等温淬火处理。
4.根据权利要求3所述的刹车钳用合金钢的制备方法,其特征在于,所述等温淬火处理,采用280±20℃盐浴等温淬火处理。
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Cited By (14)

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CN102660671A (zh) * 2012-06-08 2012-09-12 赵佳丽 一种55Si2Mn合金钢的热处理方法
CN102978526A (zh) * 2012-11-22 2013-03-20 浙江明磊工具实业有限公司 一种钻头用合金钢材料及制备方法
CN102978527A (zh) * 2012-11-22 2013-03-20 浙江明磊工具实业有限公司 一种钻头用合金钢材料
CN102994894A (zh) * 2012-11-22 2013-03-27 浙江明磊工具实业有限公司 一种钻头用合金钢材料制备方法
CN102994909A (zh) * 2012-11-26 2013-03-27 俞虹 一种合金钢材料及其制备方法
CN103014548A (zh) * 2012-11-26 2013-04-03 姚芸 一种合金钢及其制备方法
CN103014547A (zh) * 2012-11-26 2013-04-03 姚芙蓉 一种合金钢制备方法
CN104294192A (zh) * 2014-10-20 2015-01-21 郭芙 一种耐磨性能高的合金制备方法
CN104294188A (zh) * 2014-10-20 2015-01-21 俞虹 一种高硬度合金钢及其制备方法
CN104294191A (zh) * 2014-10-20 2015-01-21 郭芙 一种耐磨性能高的合金
CN104313511A (zh) * 2014-10-20 2015-01-28 郭芙 一种耐磨性能高的合金及其制备方法
CN104328364A (zh) * 2014-10-20 2015-02-04 俞虹 一种高硬度合金钢制备方法
CN104328363A (zh) * 2014-10-20 2015-02-04 俞虹 一种高硬度合金钢
CN106048432A (zh) * 2016-07-16 2016-10-26 柳州科尔特锻造机械有限公司 一种高强合金钢处理工艺

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Cited By (14)

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Publication number Priority date Publication date Assignee Title
CN102660671A (zh) * 2012-06-08 2012-09-12 赵佳丽 一种55Si2Mn合金钢的热处理方法
CN102978526A (zh) * 2012-11-22 2013-03-20 浙江明磊工具实业有限公司 一种钻头用合金钢材料及制备方法
CN102978527A (zh) * 2012-11-22 2013-03-20 浙江明磊工具实业有限公司 一种钻头用合金钢材料
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CN104313511A (zh) * 2014-10-20 2015-01-28 郭芙 一种耐磨性能高的合金及其制备方法
CN104328364A (zh) * 2014-10-20 2015-02-04 俞虹 一种高硬度合金钢制备方法
CN104328363A (zh) * 2014-10-20 2015-02-04 俞虹 一种高硬度合金钢
CN106048432A (zh) * 2016-07-16 2016-10-26 柳州科尔特锻造机械有限公司 一种高强合金钢处理工艺

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